What are the common thicknesses of sheet insulation?

Sheet insulation is available in various thicknesses, but common thicknesses typically include ½ inch and 1 inch. These dimensions are widely used in residential and commercial applications because they provide effective thermal resistance while accommodating standard building practices and material limitations.

Using thicknesses like ½ inch and 1 inch allows for flexibility in installation, particularly in tight spaces where thicker insulation may not fit. Additionally, these thicknesses are sufficient to meet many insulation requirements and provide a reasonable balance between thermal performance and material cost.

Other thicknesses might be used in particular applications, but the norm for many insulation products emphasizes the practicality and efficiency that ½ inch and 1 inch offer.